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CA2265720A1 - Receiver with improved multipath signal rejection - Google Patents

Receiver with improved multipath signal rejection

Info

Publication number
CA2265720A1
CA2265720A1 CA002265720A CA2265720A CA2265720A1 CA 2265720 A1 CA2265720 A1 CA 2265720A1 CA 002265720 A CA002265720 A CA 002265720A CA 2265720 A CA2265720 A CA 2265720A CA 2265720 A1 CA2265720 A1 CA 2265720A1
Authority
CA
Canada
Prior art keywords
discriminator
signal
inbound
prn code
positioning system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002265720A
Other languages
French (fr)
Other versions
CA2265720C (en
Inventor
Richard Kai-Tuen Woo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NavCorn Technology Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2265720A1 publication Critical patent/CA2265720A1/en
Application granted granted Critical
Publication of CA2265720C publication Critical patent/CA2265720C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/22Multipath-related issues
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/24Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/29Acquisition or tracking or demodulation of signals transmitted by the system carrier including Doppler, related

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Noise Elimination (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

A global positioning system receiver includes an inbound signal terminal to receive an inbound global positioning system signal having an inbound PRN code from a global positioning system signal source. A
local PRN code generator is configured to generate a local PRN code. A discriminator is coupled to the inbound signal terminal and to the local PRN code generator and configured to compare the inbound signal and the local PRN code and to generate a discriminator signal containing a positive portion and a negative portion.
A processor (1205) is coupled to the discriminator and configured to receive the discriminator signal to process the discriminator signal to determine a bit code and to determine a distance from the global positioning system signal source based on said bit code. In one embodiment the discriminator includes an acquisition mode configured to acquire the inbound PRN code wherein the discriminator has a first gate width and a tracking mode configured to track the PRN code wherein the discriminator has a second gate width less than the first gate width. Advantages of the invention include improved multipath signal rejection.
CA002265720A 1996-09-13 1997-09-10 Receiver with improved multipath signal rejection Expired - Lifetime CA2265720C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US2606396P 1996-09-13 1996-09-13
US60/026,023 1996-09-13
US08/795,608 1997-02-05
US08/795,608 US5808582A (en) 1996-09-13 1997-02-05 Global positioning system receiver with improved multipath signal rejection
PCT/US1997/015997 WO1998011451A1 (en) 1996-09-13 1997-09-10 Receiver with improved multipath signal rejection

Publications (2)

Publication Number Publication Date
CA2265720A1 true CA2265720A1 (en) 1998-03-19
CA2265720C CA2265720C (en) 2005-02-01

Family

ID=26700709

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002265720A Expired - Lifetime CA2265720C (en) 1996-09-13 1997-09-10 Receiver with improved multipath signal rejection

Country Status (7)

Country Link
US (2) US5808582A (en)
EP (1) EP0925514B1 (en)
JP (1) JP3983812B2 (en)
AR (1) AR009778A1 (en)
BR (1) BR9712042B1 (en)
CA (1) CA2265720C (en)
WO (1) WO1998011451A1 (en)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6182011B1 (en) * 1996-04-01 2001-01-30 The United States Of America As Represented By The Administrator Of National Aeronautics And Space Administration Method and apparatus for determining position using global positioning satellites
US5808582A (en) * 1996-09-13 1998-09-15 Litton Consulting Group, Inc. Global positioning system receiver with improved multipath signal rejection
GB9700776D0 (en) * 1997-01-15 1997-03-05 Philips Electronics Nv Method of,and apparatus for,processing low power pseudo-random code sequence signals
US6243409B1 (en) * 1997-07-15 2001-06-05 Novatel, Inc. Global navigation satellite system receiver with blanked-PRN code correlation
DK0924532T3 (en) * 1997-11-19 2006-07-17 Imec Vzw Method and apparatus for receiving GPS / GLONASS signals
US6493378B1 (en) 1998-01-06 2002-12-10 Topcon Gps Llc Methods and apparatuses for reducing multipath errors in the demodulation of pseudo-random coded signals
US6075987A (en) * 1998-02-27 2000-06-13 Ericsson Inc. Stand alone global positioning system (GPS) and method with high sensitivity
US6128557A (en) * 1998-09-17 2000-10-03 Novatel Inc. Method and apparatus using GPS to determine position and attitude of a rotating vehicle
EP1063536A1 (en) * 1998-11-11 2000-12-27 Samsung Electronics Co., Ltd. Digital correlator for a receptor of signals from satellite radio-navigation systems
CN1285045A (en) * 1998-12-21 2001-02-21 三星电子株式会社 Digital correlator
GB9828693D0 (en) 1998-12-24 1999-02-17 Mitsubishi Electric Inf Tech Time delay determination
GB9928356D0 (en) * 1999-12-01 2000-01-26 Koninkl Philips Electronics Nv Method and apparatus for code phase correlation
US6603803B1 (en) 1999-03-12 2003-08-05 Navcom Technology, Inc. Global positioning system receiver for monitoring the satellite transmissions and for reducing the effects of multipath error on coded signals and carrier phase measurements
US6347113B1 (en) 1999-03-12 2002-02-12 Navcom Technology, Inc. Global positioning system receiver for monitoring the satellite transmissions and for reducing the effects of multipath error
JP3528670B2 (en) * 1999-04-05 2004-05-17 株式会社デンソー GPS receiver
US7130332B1 (en) * 1999-04-20 2006-10-31 Symmetricom, Inc. Pilot tracking for synchronization using correlation between digital signal and locally generated version of PN signal
US6704348B2 (en) * 2001-05-18 2004-03-09 Global Locate, Inc. Method and apparatus for computing signal correlation at multiple resolutions
US6453237B1 (en) * 1999-04-23 2002-09-17 Global Locate, Inc. Method and apparatus for locating and providing services to mobile devices
AU5601800A (en) * 1999-08-09 2001-03-05 Motorola, Inc. Adaptive delay lock loop tracking
US6285320B1 (en) 1999-09-03 2001-09-04 Sikorsky Aircraft Corporation Apparatus and method for mapping surfaces of an object
US6459405B1 (en) * 1999-09-07 2002-10-01 Lucent Technologies Inc. Satellite-based location system employing knowledge-based sequential signal search strategy
US7203718B1 (en) * 1999-10-29 2007-04-10 Pentomics, Inc. Apparatus and method for angle rotation
US6621857B1 (en) * 1999-12-31 2003-09-16 Thomson Licensing S.A. Carrier tracking loop for direct sequence spread spectrum systems
US6687316B1 (en) * 2000-01-25 2004-02-03 Rockwell Collins, Inc. High resolution correlator technique for spread spectrum ranging system code and carrier multipath mitigation
US6658048B1 (en) * 2000-04-07 2003-12-02 Nokia Mobile Phones, Ltd. Global positioning system code phase detector with multipath compensation and method for reducing multipath components associated with a received signal
EP1311870B1 (en) * 2000-08-24 2011-04-27 SiRF Technology, Inc. Apparatus for reducing auto-correlation or cross-correlation in weak cdma signals
US6693592B2 (en) * 2000-12-22 2004-02-17 The Charles Stark Draper Laboratory, Inc. Geographical navigation using multipath wireless navigation signals
JP4257045B2 (en) * 2001-05-08 2009-04-22 パイオニア株式会社 GPS positioning method and apparatus, navigation system, and computer program
US7006556B2 (en) 2001-05-18 2006-02-28 Global Locate, Inc. Method and apparatus for performing signal correlation at multiple resolutions to mitigate multipath interference
US7995682B2 (en) * 2001-05-18 2011-08-09 Broadcom Corporation Method and apparatus for performing signal processing using historical correlation data
US7567636B2 (en) * 2001-05-18 2009-07-28 Global Locate, Inc. Method and apparatus for performing signal correlation using historical correlation data
US7769076B2 (en) 2001-05-18 2010-08-03 Broadcom Corporation Method and apparatus for performing frequency synchronization
US7190712B2 (en) * 2001-05-18 2007-03-13 Global Locate, Inc Method and apparatus for performing signal correlation
US7088955B2 (en) * 2001-07-16 2006-08-08 Qualcomm Inc. Method and apparatus for acquiring and tracking pilots in a CDMA communication system
US6466164B1 (en) * 2001-09-10 2002-10-15 Nokia Mobile Phones Ltd. Method and apparatus for calculating pseudorange for use in ranging receivers
WO2003060543A2 (en) * 2002-01-15 2003-07-24 Accord Software & Systems Pvt.Ltd. Global positioning system receiver
US6681181B2 (en) * 2002-05-20 2004-01-20 Sige Semiconductor Inc. GPS receiver with improved immunity to burst transmissions
SE0203047D0 (en) 2002-10-15 2002-10-15 Nordnav Technologies Ab Spread spectrum signal processing
US6710739B1 (en) 2003-01-03 2004-03-23 Northrop Grumman Corporation Dual redundant GPS anti-jam air vehicle navigation system architecture and method
US7738536B2 (en) 2003-04-15 2010-06-15 Novatel Inc. Apparatus for and method of making pulse-shape measurements
US6744404B1 (en) 2003-07-09 2004-06-01 Csi Wireless Inc. Unbiased code phase estimator for mitigating multipath in GPS
JP4559780B2 (en) * 2003-07-11 2010-10-13 三星電子株式会社 GPS correlation peak signal search method and system therefor
US7315569B2 (en) * 2003-07-11 2008-01-01 Samsung Electronics Co., Ltd. Method and system for locating a GPS correlated peak signal
JP4498841B2 (en) * 2003-07-11 2010-07-07 三星電子株式会社 GPS correlation peak signal search method and system therefor.
JP3806425B2 (en) * 2003-12-01 2006-08-09 マゼランシステムズジャパン株式会社 Satellite positioning method and satellite positioning system
US7876738B2 (en) * 2004-03-02 2011-01-25 Nokia Corporation Preventing an incorrect synchronization between a received code-modulated signal and a replica code
US7719576B2 (en) * 2004-06-14 2010-05-18 Broadcom Corporation Method and apparatus for tagging digital photographs with geographic location data
US7313421B2 (en) * 2004-09-28 2007-12-25 G2 Microsystems Pty. Ltd. GPS receiver having RF front end power management and simultaneous baseband searching of frequency and code chip offset
US7973716B2 (en) * 2005-01-19 2011-07-05 The Charles Stark Draper Laboratory, Inc. Systems and methods for transparency mapping using multipath signals
WO2006088599A1 (en) 2005-01-19 2006-08-24 The Charles Stark Draper Laboratory, Inc. Systems and methods for positioning using multipath signals
US8279119B2 (en) * 2005-01-19 2012-10-02 The Charles Stark Draper Laboratory, Inc. Systems and methods for transparency mapping using multipath signals
US7738606B2 (en) * 2005-03-24 2010-06-15 Novatel Inc. System and method for making correlation measurements utilizing pulse shape measurements
US7616303B2 (en) * 2005-04-25 2009-11-10 University Of Massachusetts Systems and methods for correcting optical reflectance measurements
US7738537B2 (en) * 2005-09-14 2010-06-15 Novatel Inc. Apparatus for and method of determining quadrature code timing from pulse-shape measurements made using an in-phase code
US7526015B2 (en) * 2005-09-15 2009-04-28 02Micro International Ltd. Parallel correlator implementation using hybrid correlation in spread-spectrum communication
US7668228B2 (en) 2005-09-16 2010-02-23 Novatel Inc. Apparatus for and method of correlating to rising chip edges
US8416863B2 (en) * 2005-11-02 2013-04-09 Csr Technology Inc. System and method for detecting multipath effects in a GPS receiver
US7761072B2 (en) * 2005-12-14 2010-07-20 Sige Semiconductor (Europe) Limited GPS receiver with improved immunity to burst transmissions
GB0606501D0 (en) * 2006-03-31 2006-05-10 Qinetiq Ltd Satellite ephemeris error
US20100207820A1 (en) * 2006-09-05 2010-08-19 Radio Communication Systems Ltd. Distance measuring device
US8233516B2 (en) * 2009-06-24 2012-07-31 Qualcomm Incorporated Wideband correlation mode switching methods and apparatuses
KR101635787B1 (en) * 2009-09-28 2016-07-04 삼성전자주식회사 Apparatus and method for tracking gps signals in portable terminal
CN105282059A (en) * 2014-06-30 2016-01-27 深圳市中兴微电子技术有限公司 Multi-path selection method and equipment
TWI577158B (en) * 2015-11-05 2017-04-01 財團法人工業技術研究院 Apparatus and method of channel estimation
US10094931B2 (en) * 2016-02-23 2018-10-09 Samsung Electronics Co., Ltd Detection of, and processing of signals within a null zone by a global navigation satellite system receiver
CN109143276B (en) * 2018-02-24 2022-09-30 上海华测导航技术股份有限公司 Design method of combined anti-multipath phase discriminator based on CUSUM algorithm
JP7289312B2 (en) 2018-02-26 2023-06-09 スマートスカイ ネットワークス エルエルシー Optimized location-aided beamforming
CN112166346B (en) * 2018-05-18 2024-04-23 瑞士优北罗股份有限公司 Global Navigation Satellite System (GNSS) multipath mitigation
US12016257B2 (en) 2020-02-19 2024-06-25 Sabanto, Inc. Methods for detecting and clearing debris from planter gauge wheels, closing wheels and seed tubes

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4426712A (en) * 1981-05-22 1984-01-17 Massachusetts Institute Of Technology Correlation system for global position receiver
US4665404A (en) * 1983-10-24 1987-05-12 Offshore Navigation, Inc. High frequency spread spectrum positioning system and method therefor
US4754465A (en) * 1984-05-07 1988-06-28 Trimble Navigation, Inc. Global positioning system course acquisition code receiver
US5101416A (en) * 1990-11-28 1992-03-31 Novatel Comunications Ltd. Multi-channel digital receiver for global positioning system
US5390207A (en) * 1990-11-28 1995-02-14 Novatel Communications Ltd. Pseudorandom noise ranging receiver which compensates for multipath distortion by dynamically adjusting the time delay spacing between early and late correlators
US5225842A (en) * 1991-05-09 1993-07-06 Navsys Corporation Vehicle tracking system employing global positioning system (gps) satellites
US5192957A (en) * 1991-07-01 1993-03-09 Motorola, Inc. Sequencer for a shared channel global positioning system receiver
US5414729A (en) * 1992-01-24 1995-05-09 Novatel Communications Ltd. Pseudorandom noise ranging receiver which compensates for multipath distortion by making use of multiple correlator time delay spacing
US5323322A (en) * 1992-03-05 1994-06-21 Trimble Navigation Limited Networked differential GPS system
JP3283913B2 (en) * 1992-08-20 2002-05-20 日本無線株式会社 GPS receiver
US5390124A (en) * 1992-12-01 1995-02-14 Caterpillar Inc. Method and apparatus for improving the accuracy of position estimates in a satellite based navigation system
US5398034A (en) * 1993-03-29 1995-03-14 Stanford Telecommunications, Inc. Vector delay lock loop processing of radiolocation transmitter signals
US6023489A (en) 1995-05-24 2000-02-08 Leica Geosystems Inc. Method and apparatus for code synchronization in a global positioning system receiver
DE69637296T2 (en) 1995-08-09 2008-09-04 Magellan Navigation, Inc. (n.d.Ges.d.Staates Delaware), Santa Clara DETECTION AND LOCATION OF CURRENT DEFECTS AND DETECTION OF VIBRATIONS
US5808582A (en) * 1996-09-13 1998-09-15 Litton Consulting Group, Inc. Global positioning system receiver with improved multipath signal rejection

Also Published As

Publication number Publication date
AR009778A1 (en) 2000-05-03
EP0925514A4 (en) 2001-01-31
WO1998011451A1 (en) 1998-03-19
EP0925514A1 (en) 1999-06-30
US6259401B1 (en) 2001-07-10
BR9712042A (en) 2001-09-04
JP2001501305A (en) 2001-01-30
JP3983812B2 (en) 2007-09-26
CA2265720C (en) 2005-02-01
BR9712042B1 (en) 2011-09-06
EP0925514B1 (en) 2011-04-06
US5808582A (en) 1998-09-15

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Legal Events

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EEER Examination request
MKEX Expiry

Effective date: 20170911

MKEX Expiry

Effective date: 20170911